probably fairly irrelevant, but i have heard a fair bit of bad news about optimax. i've also been told that bp ultimate and mobil synergy 9000 are the shiznit... probably a much of a muchness and depends on the petrol station.... but yeah.
And what profile are your tyres? As far as I know higher air pressures are better, but in large-sidewall tyres a bit of extra helps to reduce flex- in my MA61 (225/60) I run about 34psi...
And if the MR2 3SGE is anything like the one in an st162 SX, as far as I know, about 4000rpm is a good launch point... But I am no expert, having only had a 3sge in the family for a few weeks.
Good luck mate!
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